little.forest wrote:
> But in our case, I'm afraid we couldn't take ownership for that key. The 
> reason is, we're not trying to create a component with a key, but trying to 
> change an existing key's value. Actually, our application is a WPF 
> application. We need to make "Windows Presentation Foundation Font Cache 
> 3.0.0.0" service Starup type as "Automatic"(It's 'Manual' by default). 

You shouldn't try to do this:

   1. As you point out, it's not your key so you're assuming ownership
      of something that isn't yours.
   2. #1 is a violation of component rules.
   3. What happens if the original owner of the key (i.e., the .NET
      Framework) wants to change it?
   4. What happens when the user uninstalls your app?
   5. Lastly, it's not necessary: The cache service is an on-demand
      service and starts automatically when needed. If an app /needs/ it
      set to Automatic, the app needs fixing.

-- 
sig://boB
http://joyofsetup.com/

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